SpringBoot:集成DataSource 与 Druid监控配置
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绑定DataSource:Spring Boot默认的数据源是:org.apache.tomcat.jdbc.pool.DataSource,Druid是Java语言中最好的数据库连接池,并且能够提供强大的监控和扩展功能,而且datasource是一般项目都需要使用的功能。因此,这里将学习如何使用springboot与druid集成datasource。
springboot2.0.1+alibaba druid组件导入maven:
1)导入alibaba druid组件:
<!--druid 依赖--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.9</version> </dependency>
备注:具体请查看官网提供的使用介绍:https://github.com/alibaba/druid/tree/master/druid-spring-boot-starter。
2)导入mysql驱动包:
<!--MySQL Driver驱动包--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency>
3)导入springboot jpa集成组件:
<!-- Spring Boot的JPA依赖包--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency>
此时,pom.xml配置内容为:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4 <modelVersion>4.0.0</modelVersion> 5 6 <groupId>com.dx</groupId> 7 <artifactId>springboot-helloword</artifactId> 8 <version>0.0.1-SNAPSHOT</version> 9 <packaging>jar</packaging> 10 11 <name>springboot-helloword</name> 12 <description>Demo project for Spring Boot</description> 13 14 <parent> 15 <groupId>org.springframework.boot</groupId> 16 <artifactId>spring-boot-starter-parent</artifactId> 17 <version>2.0.1.RELEASE</version> 18 <relativePath/> <!-- lookup parent from repository --> 19 </parent> 20 21 <properties> 22 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 23 <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 24 <java.version>1.8</java.version> 25 </properties> 26 27 <dependencies> 28 <dependency> 29 <groupId>org.springframework.boot</groupId> 30 <artifactId>spring-boot-starter-web</artifactId> 31 </dependency> 32 <!--完成get set toString注册 --> 33 <dependency> 34 <groupId>org.projectlombok</groupId> 35 <artifactId>lombok</artifactId> 36 </dependency> 37 <!--springboot 热部署工具--> 38 <dependency> 39 <groupId>org.springframework.boot</groupId> 40 <artifactId>spring-boot-devtools</artifactId> 41 <optional>true</optional> 42 </dependency> 43 <dependency> 44 <groupId>org.springframework.boot</groupId> 45 <artifactId>spring-boot-starter-test</artifactId> 46 <scope>test</scope> 47 </dependency> 48 <dependency> 49 <groupId>org.springframework.boot</groupId> 50 <artifactId>spring-boot-starter-thymeleaf</artifactId> 51 </dependency> 52 <!--druid 依赖--> 53 <dependency> 54 <groupId>com.alibaba</groupId> 55 <artifactId>druid-spring-boot-starter</artifactId> 56 <version>1.1.9</version> 57 </dependency> 58 <!--MySQL Driver驱动包--> 59 <dependency> 60 <groupId>mysql</groupId> 61 <artifactId>mysql-connector-java</artifactId> 62 <scope>runtime</scope> 63 </dependency> 64 <!-- Spring Boot的JPA依赖包--> 65 <dependency> 66 <groupId>org.springframework.boot</groupId> 67 <artifactId>spring-boot-starter-data-jpa</artifactId> 68 </dependency> 69 </dependencies> 70 71 <build> 72 <plugins> 73 <plugin> 74 <groupId>org.springframework.boot</groupId> 75 <artifactId>spring-boot-maven-plugin</artifactId> 76 </plugin> 77 </plugins> 78 </build> 79 80 81 </project>
自定义datasource配置项加载:
1)在src/resources/application.properties中添加以下配置信息:
# 自定义 数据库配置信息
db.username=root
db.password=root
db.url=jdbc:mysql://localhost:3306/springboot_helloword
db.driver-class-name=com.mysql.jdbc.Driver
2)修改项目的启动入口,添加DataSource的bean注入,及标注自定义参数配置注入:
package com.dx.controller; import com.alibaba.druid.pool.DruidDataSource; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import javax.sql.DataSource; @SpringBootApplication public class SpringbootHellowordApplication { @Bean @ConfigurationProperties(prefix = "db") public DataSource dateSource() { DruidDataSource dataSource = new DruidDataSource(); return dataSource; } public static void main(String[] args) { SpringApplication.run(SpringbootHellowordApplication.class, args); } }
这里的dateSource() 启到的作用就是注入datasourcebean,同时加载自定义配置项的作用。
3)添加测试controller服务HelloWordController.java类:
package com.dx.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.sql.DataSource; import java.sql.SQLException; @Controller public class HelloWordController { @Autowired private DataSource dataSource; @RequestMapping("/index") @ResponseBody public String index() throws SQLException { System.out.println(dataSource.getConnection()); System.out.println(dataSource); return "hello spring boot"; } }
4)测试,在浏览器中访问http://localhost:8888/index,查看控制台打印信息:
com.mysql.jdbc.JDBC4Connection@7120165d { CreateTime:"2018-04-09 20:41:41", ActiveCount:1, PoolingCount:0, CreateCount:1, DestroyCount:0, CloseCount:4, ConnectCount:5, Connections:[ ] }
使用springboot集成的datasource配置项:
1)修改datasource参数配置,使用系统集成参数配置项:
## 自定义 数据库配置信息 #db.username=root #db.password=root #db.url=jdbc:mysql://localhost:3306/springboot_helloword #db.driver-class-name=com.mysql.jdbc.Driver #druid datasouce database settings begin spring.datasource.druid.db-type=com.alibaba.druid.pool.DruidDataSource spring.datasource.druid.driverClassName=com.mysql.jdbc.Driver spring.datasource.druid.url=jdbc:mysql://localhost:3306/springboot_helloword?allowMultiQueries=true&autoReconnect=true&characterEncoding=utf-8 spring.datasource.druid.username=root spring.datasource.druid.password=root # 下面为连接池的补充设置,应用到上面所有数据源中 # 初始化大小,最小,最大 spring.datasource.druid.initial-size=5 spring.datasource.druid.min-idle=5 spring.datasource.druid.max-active=20 # 配置获取连接等待超时的时间 spring.datasource.druid.max-wait=60000 # 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 spring.datasource.druid.time-between-eviction-runs-millis=60000 # 配置一个连接在池中最小生存的时间,单位是毫秒 spring.datasource.druid.min-evictable-idle-time-millis=300000 spring.datasource.druid.validation-query=SELECT 1 FROM DUAL spring.datasource.druid.test-while-idle=true spring.datasource.druid.test-on-borrow=false spring.datasource.druid.test-on-return=false # 打开PSCache,并且指定每个连接上PSCache的大小 spring.datasource.druid.pool-prepared-statements=true spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20 # 配置监控统计拦截的filters,去掉后监控界面sql无法统计,\'wall\'用于防火墙 spring.datasource.druid.filter.commons-log.connection-logger-name=stat,wall,log4j spring.datasource.druid.filter.stat.log-slow-sql=true spring.datasource.druid.filter.stat.slow-sql-millis=2000 # 通过connectProperties属性来打开mergeSql功能;慢SQL记录 spring.datasource.druid.connect-properties.=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 # 合并多个DruidDataSource的监控数据 spring.datasource.druid.use-global-data-source-stat=true
2)在springboot服务启动类不用注入其他bean和加载参数配置:
package com.dx.controller; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class SpringbootHellowordApplication { public static void main(String[] args) { SpringApplication.run(SpringbootHellowordApplication.class, args); } }
3)测试服务类HelloWordController.java与上边一样即可。
4)测试,在浏览器中访问http://localhost:8888/index,查看控制台打印信息:
com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl@3e6c29a1 { CreateTime:"2018-04-09 21:15:51", ActiveCount:1, PoolingCount:4, CreateCount:5, DestroyCount:0, CloseCount:4, ConnectCount:5, Connections:[ {ID:1407373927, ConnectTime:"2018-04-09 21:15:51", UseCount:0, LastActiveTime:"2018-04-09 21:15:51"}, {ID:485935020, ConnectTime:"2018-04-09 21:15:51", UseCount:0, LastActiveTime:"2018-04-09 21:15:51"}, {ID:1400896839, ConnectTime:"2018-04-09 21:15:51", UseCount:0, LastActiveTime:"2018-04-09 21:15:51"}, {ID:209844136, ConnectTime:"2018-04-09 21:15:51", UseCount:0, LastActiveTime:"2018-04-09 21:15:51"} ] } [ {ID:1407373927,poolStatements:[]}, {ID:485935020,poolStatements:[]}, {ID:1400896839,poolStatements:[]}, {ID:209844136,poolStatements:[]} ]
配置监控统计功能:
1)配置Servlet(监控视图配置):
如下是在SpringBoot项目中基于注解的配置,如果是web.xml配置,按规则配置即可。
package com.base.servlet; import com.alibaba.druid.support.http.StatViewServlet; import javax.servlet.annotation.WebInitParam; import javax.servlet.annotation.WebServlet; /** * druid数据源状态监控. * */ @WebServlet(urlPatterns="/druid/*", initParams={ @WebInitParam(name="allow",value="192.168.1.72,127.0.0.1"),// IP白名单(没有配置或者为空,则允许所有访问) @WebInitParam(name="deny",value="192.168.1.73"),// IP黑名单 (存在共同时,deny优先于allow) @WebInitParam(name="loginUsername",value="admin"),// 用户名 @WebInitParam(name="loginPassword",value="123456"),// 密码 @WebInitParam(name="resetEnable",value="false")// 禁用html页面上的“Reset All”功能 } ) public class DruidStatViewServlet extends StatViewServlet { private static final long serialVersionUID = 1L; }
2)过滤不需要监控的后缀:
package com.base.servlet; import javax.servlet.annotation.WebFilter; import javax.servlet.annotation.WebInitParam; import com.alibaba.druid.support.http.WebStatFilter; /** * druid过滤器. */ @WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*", initParams = { @WebInitParam(name = "exclusions", value = "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")//忽略资源 } ) public class DruidStatFilter extends WebStatFilter { }
3)测试配置是否成功。
访问网址:http://localhost:8888/druid/index.html
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